CJC-1295 comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Updated 2026-07-14. Numbers and descriptions here follow the published literature rather than marketing material.
The peptide binds GHRH receptors on somatotroph cells within the anterior pituitary, triggering a signalling cascade that increases growth hormone secretion. Its improved resistance to dipeptidyl peptidase IV degradation distinguishes it from the parent hormone. In the DAC-bearing version, a maleimide group reacts with a cysteine residue on serum albumin, forming a covalent bond that keeps the peptide in circulation far longer. That albumin attachment is the central design feature separating the two research variants.
Pharmacokinetic behaviour differs sharply between the two forms. The DAC-bearing peptide shows an extended circulation time measured in days, whereas the version without the complex is cleared within roughly half an hour. This gap shapes how researchers design dosing schedules in animal models. Whether the prolonged presence of the DAC form produces effects meaningfully different from the short-acting variant remains an open question, since comparative human data are scarce.
CJC-1295 is a synthetic peptide designed to mimic growth hormone-releasing hormone (GHRH), the endogenous signal that prompts the pituitary gland to release growth hormone. The compound is a modified fragment of the natural hormone, spanning the first twenty-nine amino acids of GHRH with several substitutions that slow enzymatic breakdown. Two variants circulate in research settings: one carrying a drug affinity complex (DAC) and one without it. The DAC-free form is frequently labelled Mod GRF(1-29) in catalogs and discussion forums.
Both forms act at the pituitary receptor for growth hormone-releasing hormone and increase growth hormone output, which in turn raises insulin-like growth factor 1. A long-acting analog produces sustained rather than pulsatile stimulation, and the physiological consequences of that pattern are not fully settled. Published human data on the extended form remain limited, and much of what circulates in discussion traces to early company reports rather than independent replication. How sustained exposure affects normal feedback remains an open question.
The distinguishing feature of the DAC form is a maleimide-containing group that reacts with the free thiol of cysteine-34 on human serum albumin. This reaction forms a covalent bond without enzymatic assistance, and it takes place after the peptide enters the bloodstream. Because albumin is abundant and long-lived, the attached peptide is carried through circulation far longer than an unmodified fragment would survive. The chemistry is a deliberate pharmacokinetic strategy rather than a change to receptor activity.
| Property | Value | Notes |
|---|---|---|
| Molecular weight (with DAC) | ~3647 Da | Calculated from the full amino acid sequence |
| Molecular weight (without DAC) | ~3368 Da | Mod GRF(1-29) variant |
| Appearance | White lyophilized powder | Typical form supplied for research |
| Solubility | Soluble in water | Dissolves in aqueous buffers |
| Receptor target | GHRH receptor | Expressed on pituitary somatotroph cells |
Naming in this area is inconsistent, and readers should treat product labels with care. In much of the literature and in vendor catalogs, the unqualified term refers to the albumin-binding version, while the version lacking the DAC group appears as modified GRF(1-29), mod GRF(1-29), or the same name with a without-DAC qualifier. Because one abbreviation has been applied to both materials, the only reliable way to identify a sample is to check the stated sequence and the presence of the linker.
CJC-1295 is the name used for a synthetic peptide modeled on growth hormone-releasing hormone, the hypothalamic signal that prompts the pituitary to release growth hormone. The compound was described by a Canadian drug discovery company in the mid-2000s as a long-acting research tool. Two closely related molecules share the name in practice: one carries a drug affinity complex, or DAC, group, and one does not. The distinction matters because the two behave differently in circulation.
Studies in this area generally track growth hormone pulses, insulin-like growth factor 1 concentrations, and occasionally body composition endpoints. Most published human data come from early, small trials, and questions about long-term effects remain open. Whether repeated exposure alters pituitary responsiveness over time is not settled. Analytical work relies on immunoassays for the hormones and on mass spectrometry for the peptide itself, because the two measurements answer different questions.
Binding of the peptide to the growth hormone-releasing hormone receptor on pituitary somatotrophs triggers a G protein coupled cascade that raises cyclic AMP and opens calcium channels. The result is greater secretion of growth hormone into the bloodstream. Because the peptide acts at the same receptor as the natural hypothalamic hormone, its effect is amplified pulse size rather than an entirely separate release pathway. Receptor binding alone does not determine the response, since somatostatin tone and other inputs modulate the final output.
The albumin-binding version stays in circulation for days, because covalent attachment to serum albumin shields the peptide from rapid filtration and degradation. Reported half-lives for this form fall in the range of several days. The version without the linker is cleared in minutes, with estimates often near thirty minutes in animal work. These figures come from small studies and vary with assay method, species, and route, so they are best read as approximate rather than fixed constants.
Two related peptides circulate under the CJC-1295 label, and they differ mainly in how long they persist in circulation. The version carrying a drug affinity complex includes a maleimidopropionic acid linker that forms a covalent bond with serum albumin. The other version, usually written as modified GRF(1-29) or tetrasubstituted GRF(1-29), lacks that linker and is cleared quickly. Mixing the two produces inconsistent readings of published half-life values, because the linker rather than the receptor-facing sequence drives most of the difference.
The core sequence keeps the receptor-binding region of GHRH while replacing four positions that are vulnerable to dipeptidyl peptidase-4 and other proteases. Substitutions at positions 2, 8, 15, and 27 raise metabolic stability relative to the natural hormone. The N-terminal residues remain essential for activity, so changes there generally lower potency. Molecular weight sits near 3368 daltons for the tetrasubstituted analog without the linker, while the albumin-binding form is heavier because of the added maleimide group.
CJC-1295 is a synthetic peptide modeled on growth hormone-releasing hormone, the hypothalamic signal that prompts the pituitary to release growth hormone. Its sequence corresponds to the first twenty-nine residues of human GHRH, with four substitutions that slow enzymatic breakdown. Early descriptions placed the compound in research on growth hormone deficiency and related conditions, and later literature groups it with the long-acting GHRH analogs. The name appears in both laboratory and popular fitness writing, where it sometimes labels chemically different peptides.
Reported half-lives differ widely between the two variants and between species. Values for the albumin-binding form are usually expressed in days, while the unconjugated form is measured in minutes to a few hours. Sampling schedules, assay sensitivity, and route of administration all influence the numbers, which limits direct comparison across studies. Whether sustained receptor occupancy produces different downstream effects from pulsatile stimulation remains an open question in the published work. Claims about relative potency should therefore be read alongside the specific study design that produced them.
Lyophilised powder is the usual supplied form. The material is hygroscopic, so vials are typically equilibrated to room temperature before opening in order to prevent condensation on the contents. Long-term storage is generally described at minus twenty degrees Celsius or colder, protected from light and moisture. Repeated freeze-thaw cycles are avoided because they promote aggregation and loss of soluble material. A reconstituted solution is considerably less stable than the dry powder and is normally kept refrigerated for short periods only.
A type of research study that tests how well new medical approaches work in people. These studies test new methods of screening, prevention, diagnosis, or treatment of a disease. Also called a clinical trial. (NCI) A clinical trial is a research study to answer specific questions about vaccines or new therapies or new ways of using known treatments. Clinical trials (also called medical research and research studies) are used to determine whether new drugs or treatments are both safe and effective. Carefully conducted clinical trials are the fastest and safest way to find treatments that work in people. Trials are in four phases: Phase I tests a new drug or treatment in a small group; Phase II expands the study to a larger group of people; Phase III expands the study to an even larger group of people; and Phase IV takes place after the drug or treatment has been licensed and marketed. (NLM) Any investigation in human subjects intended to discover or verify the clinical, pharmacological, and/or other pharmacodynamic effects of an investigational product(s), and/or to identify any adverse reactions to an investigational product(s), and/or to study absorption, distribution, metabolism, and excretion of an investigational product(s) with the object of ascertaining its safety and/or efficacy. The terms clinical trial and clinical study are synonymous. (ICH E6) Clinical Trial/Study Report
=== Murder of Catherine "Rena" West === Rena maintained sporadic contact with her children on each occasion she and Fred separated. She is also known to have visited Fred's family in Much Marcle, Herefordshire, to enquire as to her children's whereabouts and welfare in the latter half of August 1971. Fred's sister-in-law, Christine, later recollected Rena was depressed and extremely anxious about her children. Being provided with Fred's Midland Road address, Rena sought to confront him—likely to discuss or demand custody of her daughters. This was the last time Rena was seen alive. She is believed to have been murdered by strangulation, possibly in the back seat of Fred's Ford Popular and likely while intoxicated. When Rena's body was discovered, a short length of metal tubing was found with her remains, leaving open a possibility she had been restrained and subjected to a sexual assault prior to her murder. The body was extensively dismembered, placed into plastic bags and buried close to a cluster of trees, known as Yewtree Coppice, at Letterbox Field.
Isaria cicadae Miq. 1838, which is the same as Cordyceps cicadae (Miq.) Massee 1895 and Paecilomyces cicadae. The preferred name for this species appears to be Cordyceps cicadae (Miq.) Massee 1895, especially since Isaria has proven to be polyphyletic. Cordyceps cicadae Shing 1975, which is now properly known as Tolypocladium dujiaolongae Y.P. Cao & C.R. Li after its local name in TCM ("Du Jiao Long"). Some Chinese sources believe that it is the teleomorph of "Chan Hua", which is now proven false with the discovery of its true teleomorph. Cordyceps sobolifera (now Ophiocordyceps sobolifera). Japanese sources incorrectly believe that this is the teleomorph of "Chan Hua", but it is in reality another TCM material known as "Xiao Chan Hua" (small cicada flower). The error has spread to Korean, Taiwanese, and Chinese sources. Cordyceps kobayasii, another purported teleomorph of "Chan Hua". Cordyceps chanhua Z.Z. Li et al., which is the correct name of "Chan Hua". In traditional medicine-related papers, each of the names have been used to describe the material known as "Chan Hua". C. cicadae and I. cicadae used to be very common in sources written by Chinese researchers, though they have largely adopted the corrected C. chanhua name. Japanese, Korean, and Taiwanese sources still use C. sobolifera. Other reported synonyms include Cordyceps zhejiangensis and C. sinclairii.
anabolism Any metabolic reaction or process in which energy is expended in order to build complex substances such as macromolecules from simpler compounds, including aspects of growth and biosynthesis. Anabolic processes and pathways tend to involve reductive steps that create high-enthalpy, low-entropy compounds such as proteins and nucleic acid polymers. Contrast catabolism.
=== Compensatory mutations in RNA === As the function of a RNA molecule is dependent on its structure, the structure of RNA molecules is evolutionarily conserved. Therefore, any mutation that alters the stable structure of RNA molecules must be compensated by other compensatory mutations. In the context of RNA, the sequence of the RNA can be considered as ' genotype' and the structure of the RNA can be considered as its 'phenotype'. Since RNAs have relatively simpler composition than proteins, the structure of RNA molecules can be computationally predicted with high degree of accuracy. Because of this convenience, compensatory mutations have been studied in computational simulations using RNA folding algorithms.
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Psychedelics are used as entheogens for religious and spiritual purposes by some groups. Examples of psychedelic churches and religious groups include the Native American Church (NAC), the League for Spiritual Discovery (LSD), the Neo-American Church, the Church of the Tree of Life, the Temple of the True Inner Light (TTIL), União do Vegetal (UDV), Santo Daime, and the Church of Ambrosia (Zide Door Church of Entheogenic Plants), among many others. Some figures such as Sam Harris and Roland Griffiths have also espoused secular spirituality and have advocated the use of psychedelics as a gateway and aid to meditation and by extension as a way of enhancing personal well-being.
== Background == In 1994, with record labels trying to capitalize on the popularity of grunge and alternative rock bands like Nirvana, Pearl Jam, and Soundgarden, Local H caught the attention of Polydor Records, which was then in the process of merging with Island Records. Island released the band's debut studio album, Ham Fisted, the following year, but it sold below expectations and Island pressured the band's A&R rep, Joe Bosso, to drop them. Instead, Bosso pushed them into quickly recording a follow-up before Island could cancel their contract. Ahead of the release of As Good as Dead, frontman Scott Lucas was informed by Island that the album needed to sell at least 100,000 copies for the band to remain with the label.
The acetic acid bacteria in kombucha are aerobic, meaning that they require oxygen for their growth and activity. Hence, the bacteria initially migrate and assemble at the air interface, followed by the excretion of bacterial cellulose after about 2 days. The mixed, presumably mutualistic culture has been further described as being lichenous, in accord with the reported presence of the known lichenous natural product usnic acid, though as of 2015, no report appears indicating the standard cyanobacterial species of lichens in association with kombucha fungal components.
Target proteins or DNA sequences are immobilized to the wells of a microtiter plate. Many genetic sequences are expressed in a bacteriophage library in the form of fusions with the bacteriophage coat protein, so that they are displayed on the surface of the viral particle. The protein displayed corresponds to the genetic sequence within the phage. This phage-display library is added to the dish and after allowing the phage time to bind, the dish is washed. Phage-displaying proteins that interact with the target molecules remain attached to the dish, while all others are washed away. Attached phage may be eluted and used to create more phage by infection of suitable bacterial hosts. The new phage constitutes an enriched mixture, containing considerably less irrelevant phage (i.e. non-binding) than were present in the initial mixture. Steps 3 to 5 are optionally repeated one or more times, further enriching the phage library in binding proteins. Following further bacterial-based amplification, the DNA within the interacting phage is sequenced to identify the interacting proteins or protein fragments.
A limited theatrical run began on June 10, 2010, and the film was released on DVD and Blu-ray in the U.S. and Canada on June 29, 2010. The film explores the band's influence on popular music and the reasons why that influence has been underrepresented over the years. That is done via interviews with popular musicians, music industry professionals, and the band members themselves. On June 25, 2010, Rush received a star on the Hollywood Walk of Fame at 6752 Hollywood Boulevard. Critical acclaim continued to mount for Rush in 2010 when, on September 28, Classic Rock announced that Rush would receive 2010's Living Legends award at the Marshall Classic Rock Roll of Honour Awards in the UK. The award was presented on November 10, 2010. On September 29, Billboard.com announced that Rush would also receive the 2010 Legends of Live award for significant and lasting contributions to live music and the art of performing live and reaching fans through the concert experience. The award was presented at the Billboard Live Music Awards on November 4, 2010. In 2013, the Canadian government honoured Rush with a first class "permanent" postage stamp, the equivalent of a "Forever" stamp in the US, featuring the iconic "Starman" Rush logo. The band members were made Officers of the Order of Canada in 1996. In May 2012, the band received the Governor General's Performing Arts Award for Lifetime Artistic Achievement at a ceremony at Rideau Hall, followed the next by a gala at the National Arts Centre celebrating the award recipients.
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The council is based at County Hall at Aykley Heads in the northern suburbs of the city of Durham. The building was purpose-built for the council and was completed in 1963. When first created the council met at the courthouse on Old Elvet, which at the time was known as Shire Hall. A few years after its creation the council decided to build its own headquarters on a site nearby, also on Old Elvet, which was also given the name Shire Hall. The new building was completed in 1898, after which the old Shire Hall became known as the Assizes Court, and since 1971 as Durham Crown Court. The council has announced plans to move to the Rivergreen building, also in the Aykley Heads area of Durham, in 2025, with the intention that County Hall would then be redeveloped.
Cementum is slightly softer than dentin and consists of about 45% to 50% inorganic material (hydroxyapatite) by weight and 50% to 55% organic matter and water by weight. The organic portion is composed primarily of collagen and proteoglycans. Cementum is avascular, receiving its nutrition through its own imbedded cells from the surrounding vascular periodontal ligament. The cementum is light yellow and slightly lighter in color than dentin. It has the highest fluoride content of all mineralized tissue. Cementum also is permeable to a variety of materials. It is formed continuously throughout life because a new layer of cementum is deposited to keep the attachment intact as the superficial layer of cementum ages. Cementum on the root ends surrounds the apical foramen and may extend slightly onto the inner wall of the pulp canal.
In this therapy, the sd-rxRNA eliminated the expression of immunosuppressive receptors and proteins in therapeutic immune cells so it improved the ability of immune cells to destroy the tumor cells. Then, the PD-1 targeted sd-rxRNA helped increasing the anti-tumor activity of tumor-infiltrating lymphocytes (TIL) against melanoma cells. Based on this idea, the mRNA-4157 has been tested and passed phase I clinical trial. Cytosolic nucleic acid-sensing pathways can enhance immune response to cancer. RIG-I agonist, stem loop RNA (SLR) 14. Tumor growth was significantly delayed and extended survival in mice. SLR14 improved antitumor efficacy of anti-PD1 antibody over single-agent treatment. SLR14 was absorbed by CD11b+ myeloid cells in the tumor microenvironment. Genes associated with immune defense were significantly up-regulated, along with increased CD8+ T lymphocytes, NK cells, and CD11b+ cells. SLR14 inhibited nonimmunogenic B16 tumor growth, leaving immune memory.
=== Interwar years (1919-1941) === Following the Ottoman Empire's post-World War I dismemberment and the foundation of the successor Turkish Republic in 1923, Mustafa Kemal Atatürk banned all Sufi orders and installed the Directorate of Religious Affairs as sole governing entity over religion. Bektashi lodges in Turkey were subsequently closed in 1925, with the order's leadership relocating to Albania and establishing its headquarters in Tirana. Salih Nijazi was the last Dedebaba in Turkey and the first in Albania, formerly appointed to his role in the latter country on 30 March 1930. The order became involved in Albanian politics, and some of its members, including Ismail Qemali, were major leaders of the Albanian National Awakening (Rilindja). After the lodges in Turkey were shut down, the order's headquarters moved to Albania. On 20 March 1930, Salih Nijazi was elected as the Dedebaba of the Bektashi community in Albania. Before Nijazi, the Dedebaba was Haxhi Fejzullah in Turkey. Njazi established the Bektashi World Headquarters in Tirana. Its construction was finished in 1941 during the Italian occupation of Albania. Nijazi promoted Bektashi Islam by introducing major ceremonies at popular tekkes. After he was murdered in 1941, Ali Riza succeeded him as the Dedebaba.
=== Dextran-crosslinked microspheres === One application of the glucose polymer dextran in microsphere compositions is as a cross-linker. Dextran and oxidized dextran can be used to crosslink gelatin microspheres to reduce gelatin dissolution, which slows the drug release rate. These dextran/gelatin microspheres can be used to provide slow-release of TRAPP-Br, which is a cancer therapeutic. Hydrogel microspheres synthesized by using porous chitosan polyelectrolyte complex with dextran sulfate as a cross-linker can deliver hydrophobic drugs to the intestines with high efficacy.
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The synthetic peptide keeps the receptor-binding region of GHRH but carries substitutions that resist enzymatic cleavage. In the DAC version, an added group also anchors the molecule to albumin, extending its presence in the bloodstream.
The maleimide group forms a covalent link with albumin, an abundant blood protein. This attachment slows clearance, so a single administration persists much longer than the unmodified peptide. The feature is the main reason the two variants are handled differently in study design.
It is not an approved therapeutic product in major regulatory jurisdictions. It appears in research chemical catalogs and scientific literature rather than pharmacy shelves. Clinical development was limited and did not reach approval.
A maleimide moiety reacts with the thiol of cysteine-34, forming a covalent bond. The reaction occurs in circulation without enzymatic catalysis.