🧭 안내 보기 유전학이 처음이신가요? 둘러보시는 동안 모든 용어를 쉬운 말로 설명해 드립니다. 도움말이 내장된 동일한 페이지입니다.
⚡ 전문가 견해 생물학은 이미 알고 계시죠. 내용만 — 깔끔하고 간결하게, 추가 설명 없이. 기본 보기입니다.
인터페이스 언어
라이트 모드
Technology · Gene regulation
CRISPRa (gene activation)
Uses a disabled CRISPR protein to switch a gene up rather than to cut it.
Research toolno cuttingresearchregulation
Laboratory researchDemonstrated in the laboratory. There is no treatment in or near the clinic for this use.
간단한 설명
Take the CRISPR protein, break its cutting ability, and bolt on a molecular megaphone. It still finds the exact spot you aim it at, but instead of cutting it shouts — telling the cell to make far more of that gene's protein than it otherwise would.
더 깊이 알아보기
CRISPR activation uses catalytically dead Cas9 (dCas9) fused to transcriptional activator domains — VP64, p65, HSF1, or the SunTag and SAM amplification architectures — targeted to a promoter region to increase transcription of the endogenous gene. Because the endogenous locus is used, normal regulation and splicing are preserved, unlike delivering a cDNA copy.
This is the clearest counter-example to "gene editing always means changing DNA" — these tools deliberately leave the sequence alone.
What it is used for
Overwhelmingly a research tool: genome-wide activation screens that ask which genes, when turned up, produce a phenotype of interest. Therapeutically it is attractive for haploinsufficiency — conditions where one working copy of a gene is not enough — because turning up the remaining copy is conceptually simpler than replacing the broken one.
A disabled CRISPR clamp with activator modules driving expression upward. Illustration generated for The CRISPR Atlas — a visual aid, not a photograph or a literal depiction of molecular structure.
