| Keyword search (4,163 papers available) | ![]() |
"Lam A" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | The Adr1 transcription factor directs regulation of the ergosterol pathway and azole resistance in Candida albicans | Shrivastava M; Kouyoumdjian GS; Kirbizakis E; Ruiz D; Henry M; Vincent AT; Sellam A; Whiteway M; | 37791798 BIOLOGY |
| 2 | Trauma-informed Approaches to Substance Use Interventions with Indigenous Peoples: A Scoping Review | Pride T; Lam A; Swansburg J; Seno M; Lowe MB; Bomfim E; Toombs E; Marsan S; LoRusso J; Roy J; Gurr E; LaFontaine J; Paul J; Burack JA; Mushquash C; Stewart SH; Wendt DC; | 34895091 PSYCHOLOGY |
| 3 | Loss of Arp1, a putative actin-related protein, triggers filamentous and invasive growth and impairs pathogenicity in Candida albicans. | Yao S, Feng Y, Islam A, Shrivastava M, Gu H, Lu Y, Sheng J, Whiteway M, Feng J | 33363697 BIOLOGY |
| 4 | The Canadian Fungal Research Network: current challenges and future opportunities. | Horianopoulos LC, Gluck-Thaler E, Benoit Gelber I, Cowen LE, Geddes-McAlister J, Landry CR, Schwartz IS, Scott JA, Sellam A, Sheppard DC, Spribille T, Subramaniam R, Walker AK, Harris SD, Shapiro RS, Gerstein A | 32717148 BIOLOGY |
| 5 | Hof1 plays a checkpoint related role in MMS induced DNA damage response in Candida albicans. | Feng J, Islam A, Bean B, Feng J, Sparapani S, Shrivastava M, Goyal A, Omran RP, Mallick J, Whiteway M | 31940254 BIOLOGY |
| 6 | The Genomic Landscape of the Fungus-Specific SWI/SNF Complex Subunit, Snf6, in Candida albicans. | Tebbji F, Chen Y, Sellam A, Whiteway M | 29152582 BIOLOGY |
| 7 | Integration of Growth and Cell Size via the TOR Pathway and the Dot6 Transcription Factor in Candida albicans. | Chaillot J, Tebbji F, Mallick J, Sellam A | 30593490 BIOLOGY |
| 8 | Functional divergence of a global regulatory complex governing fungal filamentation. | Polvi EJ, Veri AO, Liu Z, Hossain S, Hyde S, Kim SH, Tebbji F, Sellam A, Todd RT, Xie JL, Lin ZY, Wong CJ, Shapiro RS, Whiteway M, Robbins N, Gingras AC, Selmecki A, Cowen LE | 30615616 BIOLOGY |
| 9 | Mms21: A Putative SUMO E3 Ligase in Candida albicans That Negatively Regulates Invasiveness and Filamentation, and Is Required for the Genotoxic and Cellular Stress Response. | Islam A, Tebbji F, Mallick J, Regan H, Dumeaux V, Omran RP, Whiteway M | 30530734 PERFORM |
| Title: | The Adr1 transcription factor directs regulation of the ergosterol pathway and azole resistance in Candida albicans | ||||
| Authors: | Shrivastava M, Kouyoumdjian GS, Kirbizakis E, Ruiz D, Henry M, Vincent AT, Sellam A, Whiteway M | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/37791798/ | ||||
| DOI: | 10.1128/mbio.01807-23 | ||||
| Publication: | mBio | ||||
| Keywords: | Adr1; Candida albicans; alcohol and fatty acid metabolism; ergosterol; rewiring; | ||||
| PMID: | 37791798 | Category: | Date Added: | 2023-10-04 | |
| Dept Affiliation: | BIOLOGY | ||||
Description: |
Transcription factors (TFs) play key roles in cellular regulation and are critical in the control of drug resistance in the fungal pathogen Candida albicans. We found that activation of the transcription factor C4_02500C_A (Adr1) conferred significant resistance against fluconazole. In Saccharomyces cerevisiae, Adr1 is a carbon-source-responsive zinc-finger transcription factor required for transcription of the glucose-repressed gene ADH1 and of genes required for ethanol, glycerol, and fatty acid utilization. Motif scanning of promoter elements suggests that Adr1 may be rewired in fungi and govern the ergosterol synthesis pathway in C. albicans. Because previous studies have identified the zinc-cluster transcription factor Upc2 as a regulator of the ergosterol pathway in both fungi, we examined the relationship between Adr1 and Upc2 in sterol biosynthesis in C. albicans. Phenotypic profiles of either ADR1 or UPC2 modulation in C. albicans showed differential growth in the presence of fluconazole; either adr1 or upc2 homozygous deletion results in sensitivity to the drug, while their activation generates a fluconazole-resistant strain. The rewiring from ergosterol synthesis to fatty acid metabolism involved all members of the Adr1 regulon except the alcohol dehydrogenase Adh1, which remains under Adr1 control in both circuits and may have been driven by the lifestyle of S. cerevisiae, which requires the ability to both tolerate and process high concentrations of ethanol. IMPORTANCE Research often relies on well-studied orthologs within related species, with researchers using a well-studied gene or protein to allow prediction of the function of the ortholog. In the opportunistic pathogen Candida albicans, orthologs are usually compared with Saccharomyces cerevisiae, and this approach has been very fruitful. Many transcription factors (TFs) do similar jobs in the two species, but many do not, and typically changes in function are driven not by modifications in the structures of the TFs themselves but in the connections between the transcription factors and their regulated genes. This strategy of changing TF function has been termed transcription factor rewiring. In this study, we specifically looked for rewired transcription factors, or Candida-specific TFs, that might play a role in drug resistance. We investigated 30 transcription factors that were potentially rewired or were specific to the Candida clade. We found that the Adr1 transcription factor conferred resistance to drugs like fluconazole, amphotericin B, and terbinafine when activated. Adr1 is known for fatty acid and glycerol utilization in Saccharomyces, but our study reveals that it has been rewired and is connected to ergosterol biosynthesis in Candida albicans. |



