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Differential Transcriptomic Responses to MRQ 74 and MRQ 76 Rice Extracts in HT-29 Cells; Implications for Apoptosis and Cell Cycle Regulation

GSE337619 Homo sapiens (human) RNA-seq (gene expression) 8 samples Submitted 2026/07/16 Platform GPL16791
At a glance

RNA-seq (gene expression) · human · 8 samples

What it is
RNA-seq (gene expression)Gene activity measured by sequencing. The summary does not mention single-cell work, so this is most likely bulk: one average per sample, the usual starting point for comparing groups.
Organism
Homo sapiens (human)
Topic
Colorectal cancerThis series is part of our curated briefing on it.
Samples
8 samples: 8 samples, each with a distinct title — no replicated groupsGroups are read from the sample names, not from the paper. Check the list below.
Data you can get
A processed table (series matrix) and supplementary files from NCBI; the raw sequencing reads from ENA. Which of these hold counts depends on the study, so check the file list.
Summary (written by the submitters)
Colorectal cancer (CRC) remains a leading cause of cancer-related mortality worldwide, and resistance to conventional chemotherapy necessitates exploration of alternative bioactive compounds. Malaysian fragrant rice varieties MRQ 74 and MRQ 76 have demonstrated cytotoxic and pro-apoptotic effects in HT-29 colorectal adenocarcinoma cells; however, their global molecular mechanisms remain unclear.
Read the full summary ↓
Transcriptomic profiling was performed using RNA sequencing (RNA-seq) to characterize gene expression changes in HT-29 cells treated with MRQ 74 3UP, MRQ 76 3P, and 5-fluorouracil (5-FU) for 24-h and 48-h. Differentially expressed genes (DEGs) were identified using |log₂FC| ≥ 1 and adjusted p-value ≤ 0.05. Functional enrichment analyses were conducted using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases. Selected apoptosis- and cell cycle-related genes were validated by qRT-PCR. High-quality sequencing data (>97% clean reads; >94% Q30; >96% mapping rate) confirmed robust transcriptomic profiling. At 24-h, MRQ 74 predominantly activated immune-related pathways, including antigen processing and cytokine signalling, whereas MRQ 76 induced modest replication-associated responses. By 48-h, MRQ 76 demonstrated marked suppression of DNA replication and cell cycle regulatory genes, with significant enrichment of DNA replication and cytokine–cytokine receptor interaction pathways. In contrast, MRQ 74 maintained sustained immunomodulatory and cell adhesion pathway enrichment. 5-FU induced extensive and progressive transcriptional disruption, reflecting broad cytotoxic stress. qRT-PCR validation confirmed concordant expression trends for key apoptotic regulators. Hence, MRQ 74 and MRQ 76 exert distinct, time-dependent molecular effects in HT-29 cells, with MRQ 74 primarily modulating immune-associated pathways and MRQ 76 targeting proliferative machinery. These findings provide transcriptomic evidence supporting the potential of rice-derived bioactive as complementary anticancer agents in CRC.
This dataset
Download · which file do I need?

Direct links to NCBI and ENA, no account and no request form. Pick by what you want to do: take the small processed table to look, the supplementary files to re-analyse, or the original raw data to start over.

1 · Just have a look

Processed table

The series matrix: one table of values per sample as the submitters processed it. The smallest download, and it opens in Excel or R. Start here to see what the data look like.

2 · Re-analyse it

Supplementary files

The count tables and other files the authors uploaded. Take only the samples you need, or the whole study as GSE337619_RAW.tar (it can run to tens of gigabytes).

3 · Start from the raw reads

Raw sequencing reads

The original FASTQ files, straight from the sequencer, held at ENA. Large, and you align them yourself, so only choose this if you need to re-process the study from scratch.

What the files usually look like: For RNA-seq the counts are usually a table among the supplementary files (look for 'counts', 'expression', 'FPKM' or 'TPM' in the file name). The series matrix of a sequencing study is sometimes nearly empty.

Also filed as BioProject PRJNA1490505 and SRA study SRP715469. Searching any of these in the dataset finder brings you back here.

Study design
8 samples, each with a distinct title — no replicated groups

Any grouping that defines a comparison lives in the sample characteristics, which GEO records separately from the titles.

How we read this: Read from 8 sample titles: 8 distinct titles with little repetition. These groups are guessed from the sample names, not taken from the paper, so check them against the sample list below before relying on them.

Samples in this study
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